Home / 140,212.17-210,143.30-70,111.53

Finding the Fourth Proportional to 140,212.17, 210,143.30 and 70,111.53

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Solution

The fourth proportional to 140,212.17, 210,143.30 and 70,111.53 is: 105,079.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,212.17 : 210,143.30 = 70,111.53 : x
  2. Step 2: Convert to fraction form
    140,212.17/210,143.30 = 70,111.53/x
  3. Step 3: Cross multiply
    140,212.17x = 210,143.30 × 70,111.53
  4. Step 4: Simplify right side
    140,212.17x = 14,733,467,931.69
  5. Step 5: Solve for x
    x = 14,733,467,931.69/140,212.17
  6. Step 6: Final answer
    x = 105,079.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.